SC403

更新时间： 2024-11-02 06:10:15

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
32页	678K
描述
6A EcoSpeedTM Integrated FET Regulator with Programmable LDO

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中文翻译

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SC403 数据手册

SC403

6A EcoSpeed^TMIntegrated FET

Regulator with Programmable LDO

POWER MANAGEMENT

Features

Description



Power System:

The SC403 is a stand-alone synchronous EcoSpeed^TMbuck

power supply which incorporates Semtech’s advanced

patent-pending adaptive on-time control architecture to

provide excellent light-load eﬃciency and fast transient

response. It features integrated power MOSFETs, a boot-

strap switch, and a programmable LDO in a 5x5mm

package. The device is highly eﬃcient and uses minimal

PCB area.

• Input voltage — 3V to 28V

• Internal or external bias voltage — 3V to 5V

• Integrated bootstrap switch

• Programmable LDO output — 200mA

• 1% reference tolerance -40 to +85 °C

• EcoSpeed^TMarchitecture with pseudo-fixed

frequency adaptive on-time control

Logic Input/Output Control:



The SC403 supports using standard capacitor types such

as electrolytic or special polymer, in addition to ceramic, at

switching frequencies up to 1MHz. The programmable

frequency, synchronous operation, and selectable power-

save provide high eﬃciency operation over a wide load

range.

• Independent control EN for LDO and switcher

• Programmable V_INUVLO threshold

• Power good output

• Selectable ultrasonic power save mode

• Programmable soft start time

Protections:

• Over-voltage and under-voltage

• TC compensated R_DS(ON)sensed current limit

• Thermal shutdown

Additional features include a programmable soft-start,

programmable cycle-by-cycle over-current limit protec-

tion, under and over-voltage protections, soft shutdown,

and selectable power-save. The device also provides sep-

arate enable inputs for the PWM controller and LDO as

well as a power good output for the PWM controller.



Any ESR — SP, POSCAP, OSCON, and ceramic capacitors

Package:

• Lead-free package — 5x5mm, 32-pin MLPQ

• Fully RoHS/WEEE compliant and halogen free

The wide input and bias voltage ranges, programmable

frequency, and programmable LDO make the device

extremely flexible and easy to use in a broad range of

applications. The SC402 can be used in server computers

and single cell or multi-cell battery systems in addition to

traditional DC power supply applications.

Applications



Oﬃce automation and computing

Networking and telecommunication equipment

Point of load power supplies and module replacement

Typical Application Circuit

ENABLE/PSAVE

RILIM

LXS

ENL

TON

ENABLE LDO

RTON

PGOOD

VOUT

PGOOD

VOUT

10Ω

VDD

VEXT/LDO

SC403

1µF

CSOFT

COUT

RFB1

RFB2

BST

VIN

CIN

CBST

June 30, 2010

12 3 4 5 6 7...32

中文翻译

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与SC403相关器件

型号	品牌	获取价格	描述	数据表
SC403B	SEMTECH	获取价格	6A EcoSpeedÂ® Integrated FET Regulator with P
SC403BMLTRT	SEMTECH	获取价格	Switching Regulator, 7.2A, 1000kHz Switching Freq-Max, 5 X 5 MM, HALOGEN FREE AND ROHS COM
SC403EVB	SEMTECH	获取价格	6A EcoSpeedTM Integrated FET Regulator with Programmable LDO
SC403MLTRT	SEMTECH	获取价格	6A EcoSpeedTM Integrated FET Regulator with Programmable LDO
SC4040	SEMTECH	获取价格	PRECISION SHUNT VOLTAGE REFERENCE
SC4040AS	SEMTECH	获取价格	PRECISION SHUNT VOLTAGE REFERENCE
SC4040AS.TR	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, PDSO8, SOP-8
SC4040ASK	SEMTECH	获取价格	PRECISION SHUNT VOLTAGE REFERENCE
SC4040ASK.TRT	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, PDSO3, SOT-23, 3 PIN
SC4040ASKT	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, PDSO3, SOT-23, 3 PIN

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